Kiribati, a climate-threatened archipelago that is home to some 130,000 people, sits barely two metres (6.5 feet) above sea level, has little freshwater, no rivers and limited fertile land.
The International Court of Justice in The Hague declared Wednesday that states are obliged under international law to tackle climate change.
"There was a time when it really got me very depressed because of the realisation that there is not much that we can do about it," former Kiribati president Anote Tong, who led the remote nation for 12 years until 2016, told AFP.
"I've heard people about talking about climate grief, and perhaps that is what climate grief is all about: realising that you have no future, and understanding that my grandchildren, I've got a lot of grandchildren, I don't know what is going to happen to them."
"Previously, I spoke as a leader, now I speak as a grandfather on the climate issue."
Tong welcomed the "wonderful achievement" of the international court decision but warned it risked overshadowing the voices of those at the forefront of climate change.
"This is a human rights issue. It's not a legal issue," he said. "There is always a danger that we're not focusing on justice, but more on the legal aspects of the issue."
- 'How do we survive?' -
The UN's climate expert panel warned rising sea levels and coastal erosion could render some Pacific nations, including Kiribati, uninhabitable by 2060.
Tong, 73, said that during his lifetime, extreme weather events had increasingly destroyed crops and fresh water sources.
The climate leader said corals lie just off his property.
"I used to play with my kids when the tide was at its highest. Now, you can never do that because the waves are too strong," he said.
"That's definitely a change. The question is that, can our islands withstand the change?"
Tong said he feared a window of opportunity has passed.
He blamed the international community, including polluting countries and global bodies, which he said had "failed at every turn" to address climate change and ignored the plight of smaller island states.
"Our future is not assured," he said. "I've all but given up, but I can never afford to give up."
"We're still fighting the fight. The real question is: how do we survive? How do our grandchildren survive?"
Cook Islands wages war on 'plague' of hungry starfish
Rarotonga, Cook Islands (AFP) July 24, 2025 -
Divers clutch wooden spears as they plunge beneath the waves, hunting hordes of hungry starfish destroying the coral reefs around the Cook Islands.
These makeshift tools are their best weapons in the war against crown-of-thorns starfish, a coral-munching species eating through tropical reefs already weakened by climate change.
The Cook Islands, a South Pacific nation of about 17,000 people, is in the grips of a years-long outbreak, says marine biologist Teina Rongo.
"It can completely kill off the entire reef, right around the island," said Rongo, who organises volunteers protecting the reefs fringing the isle of Rarotonga.
"I think there seems to be a Pacific-wide outbreak at the moment, because we're hearing other countries are facing similar challenges."
A single crown-of-thorns adult can eat more than 10 square metres (110 square feet) of reef each year, squeezing its stomach through its mouth to coat coral in digestive juices.
They pose a major threat to Australia's Great Barrier Reef, where scientists have developed robots that hunt down the prickly invertebrates and inject them with poison.
"At the moment, you basically kill them by injection," said researcher Sven Uthicke, from the Australian Institute of Marine Science.
"It could be vinegar, it could be lime juice or ox bile.
"Others are building chemical attraction traps. It's all very promising -- but it's in the development stage."
Rongo finds it quickest to pry the feasting starfish loose using a wooden stick cut from the dense timber of the Pacific Ironwood tree.
"Basically, we use a stick with a hook at the end," he said.
"We've made some modifications over time because we were getting pricked by these starfish. It's painful."
Named for their hundreds of venomous spikes, crown-of-thorns starfish have as many as 21 fleshy arms and can grow larger than a car tyre.
They are typically found in such low numbers that they are not considered a problem.
But sporadically populations explode in a feeding frenzy that rapidly strips the life from reefs.
- 'Plague proportions ' -
They spawn in "plague proportions", according to the Australian Institute of Marine Science, and are a major driver of coral loss.
From the Red Sea to the Pacific Ocean, crown-of-thorns outbreaks appear to be becoming both more frequent and more severe.
"Some argue that the crown-of-thorns has become chronic in the last few decades," said Rongo, talking about the reefs of the South Pacific.
Scientists suspect these outbreaks are triggered by a mix of factors, including nutrients leached into the sea from agriculture and fluctuations in natural predators.
But the damage they can cause is getting worse as reefs are weakened by climate change-fuelled coral bleaching and ocean acidification.
"This is why it's important for us to help the reef," says Rongo.
Scuba divers scour the Cook Islands' reefs for hard-to-spot starfish wedged into dimly lit crevices.
Once peeled off the coral, the starfish are pierced with a thick rope so they can be dragged back up to a waiting boat.
The day's haul is dumped into a plastic chest before the starfish are lugged ashore to be counted, measured and mulched for garden fertiliser.
They are known as "taramea" in Cook Islands Maori, which loosely translates to "spiky thing".
The volunteer divers working with Rongo and his environmental group Korero O Te Orau -- or Knowledge of the Land, Sky and Sea -- remove thousands of starfish every year.
Rongo is spurred by the devastation from the nation's last major infestation in the 1990s.
"I was part of that eradication effort.
"We were too late when we did decide to do something about it. It went on and ended up killing the reef."
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